TL431 family All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 5 — 01 September 2015 6 of 27
NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
6. Limiting values
[1] Device mounted on an FR4 Printed-Circuit Board (PCB), single-sided copper, tin-plated and standard
footprint.
[2] Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for anode 1 cm
2
.
[3] Device mounted on a ceramic PCB, Al
2
O
3
, standard footprint.
Table 6. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
V
KA
cathode-anode voltage - 37 V
I
K
cathode current 100 150 mA
I
ref
reference current 0.05 10 mA
P
tot
total power dissipation T
amb
25 C
[1]
-350mW
[2]
-580mW
[3]
-950mW
T
j
junction temperature - 150 C
T
amb
ambient temperature
TL431XCDBZR 0 +70 C
TL431XIDBZR 40 +85 C
TL431XQDBZR
TL431XFDT
TL431XSDT
40 +125 C
T
stg
storage temperature 65 +150 C
(1) Ceramic PCB, Al
2
O
3
, standard footprint
(2) FR4 PCB, mounting pad for anode 1 cm
2
(3) FR4 PCB, standard footprint
Fig 2. Power derating curves
T
amb
(°C)
−75 17512525 75−25
006aab570
500
750
250
1000
1250
P
tot
(mW)
0
(1)
(2)
(3)